79890170357 has 8 divisors (see below), whose sum is σ = 81041435712. Its totient is φ = 78739628800.

The previous prime is 79890170351. The next prime is 79890170363. The reversal of 79890170357 is 75307109897.

It is an interprime number because it is at equal distance from previous prime (79890170351) and next prime (79890170363).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79890170357 - 2¹² = 79890166261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79890170351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43382 + ... + 402072.

It is an arithmetic number, because the mean of its divisors is an integer number (10130179464).

Almost surely, 2^79890170357 is an apocalyptic number.

It is an amenable number.

79890170357 is a deficient number, since it is larger than the sum of its proper divisors (1151265355).

79890170357 is a wasteful number, since it uses less digits than its factorization.

79890170357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361899.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The spelling of 79890170357 in words is "seventy-nine billion, eight hundred ninety million, one hundred seventy thousand, three hundred fifty-seven".